diff --git a/chat/pack_resolver.py b/chat/pack_resolver.py
index 73efa3da..55023976 100644
--- a/chat/pack_resolver.py
+++ b/chat/pack_resolver.py
@@ -49,6 +49,7 @@ DEFAULT_RESOLVABLE_PACK_IDS: tuple[str, ...] = (
     "en_core_quantitative_v1",
     "en_core_spatial_v1",
     "en_core_causation_v1",
+    "en_core_polarity_v1",
     "en_core_relations_v1",
     "en_core_relations_v2",
 )
diff --git a/core/config.py b/core/config.py
index 775a1420..6f4b7dce 100644
--- a/core/config.py
+++ b/core/config.py
@@ -20,6 +20,7 @@ class RuntimeConfig:
         "en_core_quantitative_v1",
         "en_core_spatial_v1",
         "en_core_causation_v1",
+        "en_core_polarity_v1",
         "en_core_relations_v1",
         "en_core_relations_v2",
         "he_logos_micro_v1",
diff --git a/language_packs/data/en_core_polarity_v1/lexicon.jsonl b/language_packs/data/en_core_polarity_v1/lexicon.jsonl
new file mode 100644
index 00000000..f5bece6d
--- /dev/null
+++ b/language_packs/data/en_core_polarity_v1/lexicon.jsonl
@@ -0,0 +1,16 @@
+{"entry_id":"en-core-polarity-001","surface":"yes","lemma":"yes","language":"en","pos":"INTJ","semantic_domains":["polarity.affirm.assent","polarity.affirm","cognition.response"],"morphology_tags":["interjection"],"provenance_ids":["seed:core_polarity_v1"]}
+{"entry_id":"en-core-polarity-002","surface":"indeed","lemma":"indeed","language":"en","pos":"ADV","semantic_domains":["polarity.affirm.emphasis","polarity.affirm","cognition.modal"],"morphology_tags":["adverb"],"provenance_ids":["seed:core_polarity_v1"]}
+{"entry_id":"en-core-polarity-003","surface":"surely","lemma":"surely","language":"en","pos":"ADV","semantic_domains":["polarity.affirm.emphasis","polarity.affirm","cognition.modal"],"morphology_tags":["adverb"],"provenance_ids":["seed:core_polarity_v1"]}
+{"entry_id":"en-core-polarity-004","surface":"definitely","lemma":"definitely","language":"en","pos":"ADV","semantic_domains":["polarity.affirm.emphasis","polarity.affirm","cognition.modal"],"morphology_tags":["adverb"],"provenance_ids":["seed:core_polarity_v1"]}
+{"entry_id":"en-core-polarity-005","surface":"no","lemma":"no","language":"en","pos":"INTJ","semantic_domains":["polarity.negate.dissent","polarity.negate","cognition.response"],"morphology_tags":["interjection"],"provenance_ids":["seed:core_polarity_v1"]}
+{"entry_id":"en-core-polarity-006","surface":"maybe","lemma":"maybe","language":"en","pos":"ADV","semantic_domains":["polarity.uncertain.tentative","polarity.uncertain","cognition.modal"],"morphology_tags":["adverb"],"provenance_ids":["seed:core_polarity_v1"]}
+{"entry_id":"en-core-polarity-007","surface":"perhaps","lemma":"perhaps","language":"en","pos":"ADV","semantic_domains":["polarity.uncertain.tentative","polarity.uncertain","cognition.modal"],"morphology_tags":["adverb"],"provenance_ids":["seed:core_polarity_v1"]}
+{"entry_id":"en-core-polarity-008","surface":"hardly","lemma":"hardly","language":"en","pos":"ADV","semantic_domains":["polarity.negate.weak","polarity.negate","cognition.modal"],"morphology_tags":["adverb"],"provenance_ids":["seed:core_polarity_v1"]}
+{"entry_id":"en-core-polarity-009","surface":"always","lemma":"always","language":"en","pos":"ADV","semantic_domains":["polarity.frequency.universal","polarity.frequency","cognition.temporal_distribution"],"morphology_tags":["adverb"],"provenance_ids":["seed:core_polarity_v1"]}
+{"entry_id":"en-core-polarity-010","surface":"sometimes","lemma":"sometimes","language":"en","pos":"ADV","semantic_domains":["polarity.frequency.partial","polarity.frequency","cognition.temporal_distribution"],"morphology_tags":["adverb"],"provenance_ids":["seed:core_polarity_v1"]}
+{"entry_id":"en-core-polarity-011","surface":"often","lemma":"often","language":"en","pos":"ADV","semantic_domains":["polarity.frequency.high","polarity.frequency","cognition.temporal_distribution"],"morphology_tags":["adverb"],"provenance_ids":["seed:core_polarity_v1"]}
+{"entry_id":"en-core-polarity-012","surface":"rarely","lemma":"rarely","language":"en","pos":"ADV","semantic_domains":["polarity.frequency.low","polarity.frequency","cognition.temporal_distribution"],"morphology_tags":["adverb"],"provenance_ids":["seed:core_polarity_v1"]}
+{"entry_id":"en-core-polarity-013","surface":"never","lemma":"never","language":"en","pos":"ADV","semantic_domains":["polarity.frequency.zero","polarity.frequency","cognition.temporal_distribution"],"morphology_tags":["adverb"],"provenance_ids":["seed:core_polarity_v1"]}
+{"entry_id":"en-core-polarity-014","surface":"usually","lemma":"usually","language":"en","pos":"ADV","semantic_domains":["polarity.frequency.high","polarity.frequency","cognition.temporal_distribution"],"morphology_tags":["adverb"],"provenance_ids":["seed:core_polarity_v1"]}
+{"entry_id":"en-core-polarity-015","surface":"occasionally","lemma":"occasionally","language":"en","pos":"ADV","semantic_domains":["polarity.frequency.partial","polarity.frequency","cognition.temporal_distribution"],"morphology_tags":["adverb"],"provenance_ids":["seed:core_polarity_v1"]}
+{"entry_id":"en-core-polarity-016","surface":"frequently","lemma":"frequently","language":"en","pos":"ADV","semantic_domains":["polarity.frequency.high","polarity.frequency","cognition.temporal_distribution"],"morphology_tags":["adverb"],"provenance_ids":["seed:core_polarity_v1"]}
diff --git a/language_packs/data/en_core_polarity_v1/manifest.json b/language_packs/data/en_core_polarity_v1/manifest.json
new file mode 100644
index 00000000..e466b1e2
--- /dev/null
+++ b/language_packs/data/en_core_polarity_v1/manifest.json
@@ -0,0 +1,13 @@
+{
+  "pack_id": "en_core_polarity_v1",
+  "language": "en",
+  "role": "operational_base",
+  "script": "Latin",
+  "normalization_policy": "unitize_versor",
+  "source_manifest": "en_core_polarity_v1.lexicon.jsonl",
+  "determinism_class": "D0",
+  "checksum": "e2ade8d02603fed3bc6b25e53064cdb99f153af1e611be0fa3c9164df5ae8383",
+  "version": "1.0.0",
+  "gate_engaged": true,
+  "oov_policy": "tagged_fallback"
+}
diff --git a/tests/test_correction_topic_lemma.py b/tests/test_correction_topic_lemma.py
index ddbb6d1f..3a029e47 100644
--- a/tests/test_correction_topic_lemma.py
+++ b/tests/test_correction_topic_lemma.py
@@ -58,7 +58,7 @@ def test_extract_topic_lemma_skips_dialogue_fillers() -> None:
 
 
 def test_extract_topic_lemma_returns_none_when_no_pack_lemma() -> None:
-    assert _extract_correction_topic_lemma("No that is wrong") is None
+    assert _extract_correction_topic_lemma("Nope that is wrong") is None
     assert _extract_correction_topic_lemma("") is None
     assert _extract_correction_topic_lemma(None) is None  # type: ignore[arg-type]
 
@@ -104,7 +104,7 @@ def test_surface_with_no_topic_degrades_to_adr_0053_template() -> None:
     with no argument emits the ADR-0053 topic-less template
     byte-identically."""
     legacy = pack_grounded_correction_surface()
-    no_lemma = pack_grounded_correction_surface("No that is wrong")
+    no_lemma = pack_grounded_correction_surface("Nope that is wrong")
     assert legacy is not None
     assert legacy == no_lemma
     assert "Noted topic" not in legacy
@@ -157,7 +157,7 @@ def test_correction_with_no_pack_lemma_still_grounds() -> None:
     still receives the acknowledgement surface (degrades to the
     topic-less template), not the universal disclosure."""
     rt = ChatRuntime()
-    response = rt.chat("No that is wrong")
+    response = rt.chat("Nope that is wrong")
     assert response.grounding_source == "pack"
     assert "correction" in response.surface.lower()
     assert "Noted topic" not in response.surface
diff --git a/tests/test_en_core_polarity_v1_pack.py b/tests/test_en_core_polarity_v1_pack.py
new file mode 100644
index 00000000..acc46fed
--- /dev/null
+++ b/tests/test_en_core_polarity_v1_pack.py
@@ -0,0 +1,140 @@
+"""``en_core_polarity_v1`` — polarity + frequency vocabulary pack tests.
+
+Closes the polarity-marker and frequency-adverb gap.  Prior packs had
+zero coverage of yes/no/maybe or always/never — common conversational
+markers fell through to OOV.  16 entries:
+
+  - polarity.affirm.*      yes indeed surely definitely        (4)
+  - polarity.negate.*      no hardly                           (2)
+  - polarity.uncertain.*   maybe perhaps                       (2)
+  - polarity.frequency.*   always sometimes often rarely never
+                           usually occasionally frequently     (8)
+
+POS mix: 2 INTJ + 14 ADV.
+
+``certain``/``certainly``/``uncertain`` were deliberately omitted —
+en_core_attitude_v1 owns those as epistemic.certainty/uncertainty.
+"""
+
+from __future__ import annotations
+
+import json
+from collections import Counter
+from pathlib import Path
+
+from chat.pack_resolver import DEFAULT_RESOLVABLE_PACK_IDS, resolve_lemma
+from core.config import RuntimeConfig
+from language_packs.compiler import load_pack
+
+
+PACK_ID = "en_core_polarity_v1"
+_PACK_ROOT = Path(__file__).resolve().parent.parent / "language_packs" / "data" / PACK_ID
+
+EXPECTED_TOTAL = 16
+EXPECTED_POS_COUNTS = {"INTJ": 2, "ADV": 14}
+
+EXPECTED_LEMMAS: tuple[str, ...] = (
+    "yes", "indeed", "surely", "definitely",
+    "no", "maybe", "perhaps", "hardly",
+    "always", "sometimes", "often", "rarely", "never",
+    "usually", "occasionally", "frequently",
+)
+
+
+def _read_lexicon() -> list[dict]:
+    return [
+        json.loads(line)
+        for line in (_PACK_ROOT / "lexicon.jsonl").read_text("utf-8").splitlines()
+        if line.strip()
+    ]
+
+
+def test_pack_loads_with_matching_checksum() -> None:
+    manifest, manifold = load_pack(PACK_ID)
+    assert manifest.pack_id == PACK_ID
+    assert len(manifest.checksum) == 64
+    assert len(manifold) == EXPECTED_TOTAL
+
+
+def test_pos_distribution_matches_design() -> None:
+    assert dict(Counter(e["pos"] for e in _read_lexicon())) == EXPECTED_POS_COUNTS
+
+
+def test_all_expected_lemmas_present() -> None:
+    _, manifold = load_pack(PACK_ID)
+    assert {manifold.get_word_at(i) for i in range(len(manifold))} == set(EXPECTED_LEMMAS)
+
+
+def test_every_entry_has_polarity_namespace_primary_domain() -> None:
+    for entry in _read_lexicon():
+        assert entry["semantic_domains"][0].startswith("polarity."), entry
+
+
+def test_no_collision_with_prior_packs() -> None:
+    prior: set[str] = set()
+    for pack in (
+        "en_core_cognition_v1", "en_core_meta_v1", "en_core_attitude_v1",
+        "en_core_temporal_v1", "en_core_action_v1", "en_core_quantitative_v1",
+        "en_core_spatial_v1", "en_core_causation_v1",
+        "en_core_relations_v1", "en_core_relations_v2",
+    ):
+        for line in (_PACK_ROOT.parent / pack / "lexicon.jsonl").read_text("utf-8").splitlines():
+            if line.strip():
+                prior.add(json.loads(line)["lemma"].lower())
+    for entry in _read_lexicon():
+        assert entry["lemma"].lower() not in prior, entry
+
+
+def test_provenance_is_seed_core_polarity_v1() -> None:
+    for entry in _read_lexicon():
+        assert entry["provenance_ids"] == ["seed:core_polarity_v1"], entry
+
+
+def test_entry_ids_contiguous_and_zero_padded() -> None:
+    entries = sorted(_read_lexicon(), key=lambda d: d["entry_id"])
+    for i, entry in enumerate(entries, start=1):
+        assert entry["entry_id"] == f"en-core-polarity-{i:03d}", entry["entry_id"]
+
+
+def test_pack_mounted_in_default_runtime_config() -> None:
+    assert PACK_ID in RuntimeConfig().input_packs
+
+
+def test_pack_registered_after_prior_content_packs() -> None:
+    assert PACK_ID in DEFAULT_RESOLVABLE_PACK_IDS
+    for earlier in (
+        "en_core_cognition_v1", "en_core_meta_v1", "en_core_attitude_v1",
+        "en_core_temporal_v1", "en_core_action_v1", "en_core_quantitative_v1",
+        "en_core_spatial_v1", "en_core_causation_v1",
+    ):
+        assert DEFAULT_RESOLVABLE_PACK_IDS.index(earlier) < DEFAULT_RESOLVABLE_PACK_IDS.index(PACK_ID)
+
+
+def test_resolver_routes_polarity_lemmas_to_this_pack() -> None:
+    for lemma in EXPECTED_LEMMAS:
+        resolved = resolve_lemma(lemma)
+        assert resolved is not None and resolved[0] == PACK_ID
+        assert resolved[1][0].startswith("polarity.")
+
+
+def test_certain_certainly_stay_in_attitude_pack() -> None:
+    """``certain`` and ``uncertain`` were deliberately excluded —
+    en_core_attitude_v1 owns the epistemic-certainty cluster."""
+    for lemma in ("certain", "uncertain"):
+        resolved = resolve_lemma(lemma)
+        assert resolved is not None and resolved[0] == "en_core_attitude_v1"
+
+
+def test_prior_pack_lemma_resolution_unchanged() -> None:
+    for lemma, expected in (
+        ("truth", "en_core_cognition_v1"),
+        ("doubt", "en_core_meta_v1"),
+        ("true", "en_core_attitude_v1"),
+        ("now", "en_core_temporal_v1"),
+        ("do", "en_core_action_v1"),
+        ("all", "en_core_quantitative_v1"),
+        ("here", "en_core_spatial_v1"),
+        ("effect", "en_core_causation_v1"),
+    ):
+        resolved = resolve_lemma(lemma)
+        assert resolved is not None and resolved[0] == expected